diff --git a/.github/workflows/nightly_win.yml b/.github/workflows/nightly_win.yml
index c87497506..145621449 100644
--- a/.github/workflows/nightly_win.yml
+++ b/.github/workflows/nightly_win.yml
@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [vs2017-win2016]
-        rust_toolchain: [stable]
+        rust_toolchain: [stable-x86_64]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v1
diff --git a/.github/workflows/tag_win.yml b/.github/workflows/tag_win.yml
index db8cf4e6b..cbd89b9f5 100644
--- a/.github/workflows/tag_win.yml
+++ b/.github/workflows/tag_win.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [vs2017-win2016]
-        rust_toolchain: [stable]
+        rust_toolchain: [stable-x86_64]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v1
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 12ef4992a..f35939678 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [vs2017-win2016]
-        rust_toolchain: [stable]
+        rust_toolchain: [stable-x86_64]
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v1